Car-truck



M. G. HUBBARD. GAR TRUCK.

No. 466,349. Patented Jan. 5, 1892.

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Mo'sEs'e. HUBBARD, OF CHICAGO, ILLINOIS.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 466,849, dated January5, 1892. Application filed February 14, 1891- Serial No. 381,484. (Nomodel.)

To all whom it may concern: v

Be it known that I, MOSES G. HUBBARD, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois, haveinvented a new and useful Improvement in Oar-Trucks, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, making part of this specification.

Myinvention consistsin an improved-rockerbearing for cars, and isdesigned to be applied thereto in a manner similar to the rockerbearingspatented by me March 11, 1890, No. 423,159.

My invention relates to the construction of the bearing in the form oftwo curved opposing rockers, and it further relates to an improvedmethod of holding the two surfaces together horizontally.

My improved rocker-bearings, like those described in the patent abovereferred to, may be applied to the spring or to auxiliary supports forconnecting the upper and lower rockers, as will be more clearly seen byreference to the drawings hereto attached and which form a part of thisspecification, and in which.

Figure 1 represents a transverse section through the wheel-pieces of thetruck, showing the spring-supporting plank and bolster and .theinterposed springs and rocker-bearing plates in elevation. Fig. 2 is asimilar section showing the spring-plank upheld by the rocker-plates andtheir rigid connections. Fig. 3 represents a vertical section throughthe spring-plank, bolster, and truck-frame cross-sills. Fig. 4 is aperspective view of the rocker-plates detached. Fig. 5 is a face view ofone of the inner rocker-plates adapted to a nest of four springs.

A A indicate the wheel-pieces of the truckframe; B B, cross-sillsconnecting the wheelpieces; 0, the spring-supporting plank; D, thebolster; a a, the springs upholding the bolster from the spring-plank;ee, the upper pairs of rocker-plates, and f f the lower pairs.

The connection between the two pairs of rocker-plates may be madevertically elastic, as. shown in Fig. l, or rigid, as shown in Fig. 2;but it will be observed that when the said connection is made elasticthe circle on which the curve of the rockers ismade should beconsiderably larger than when rigid supports freedom of the truckindependently of the 4:

car is attained while the bearing is in a normal position and agradually-increasing 'resistance to the lateral movement required tocheck it without concussion. There should also be provided a safe-checkto limit said lateral movement and prevent any excess thereof, asshown-in Figs. 1 and 2, in which the bolsters are adapted by theirlength to permit the desired amount of lateral movement and prevent anyexcess thereof by contact with the wheel-piece of the truck. 7

In Figs. 4 and 5 a convenient form of rock er-plates is shown adapted tobe applied to a nest of four vertical coil-springs, and also the bestway that I have yet found for connecting two rocker plates horizontally.The strong cog g is formed on one plate and on the other the two cogs gg, between which the cog g intermeshes. The cogs are made in proper formto adapt them to a pitch-line corresponding With the circle on whichthe'rockers are formed, and will therefore hold the two rocker-plates inexact position with reference to each other horizontally withoutresistance to the free rocking of the rockers and are much neater thanthe outer rim formed around the outer edge of one rocker-plate to holdthe other in position horizontally, as described and shownin my saidprevious patent.

In Fig. 2 the rigid connection between the upper and the lower pairs ofrocker-plates is shown at d cl, which are iron bars rigidly attached tothe upper rocker-plates e e and to the lower rocker-plates ff. Therockers e e have their bearings on the rocker-plates e e, which aresecured to the upper edges of the cross-sills of the truck, and therockers f f 5 have their hearings on the lower surfaces of any desiredmodification which dilferent constructions of the car or truck mayrequire.

Having now described my invention, what I claim, and desire to secure byLetters Pat out, is

1. In a rocker-bearing support for a carbody, the combination of twopairs of opposing rocker-plates, the opposing faces of which are curvedin a direction transverse and made straight or flat in a directionlengthwise of the truck, the curves of said opposing faces being formedon a circle the radius of which is greater than the distance of the twopairs of rockers apart, said rockers being kept in place relative toeach other by cogs located outside of their working faces, substantiallyas described.

2 The combination, in a car-body support, of the opposing rocker-plateshaving curved opposing faces and arranged in pairs, one pair aboveanother and connected one pair with the other, substantially asdescribed.

3. The combination, in a support for a carbody, of rocker-platesarranged in pairs, one pair above another, and a rigid connectionbetween said pairs, substantially as described.

4. In a car-body support, the combination of two pairs of rocker-plates,one of each pair having a large cogintermeshing with two cogs on theopposing plate to hold said plates in position horizontally with respectto each other, all of said cogs" being formed to work on a pitch-linecorresponding with the curve of the working faces of the rocker-platesand located outside thereof, whereby fiat places or the equivalentthereof on the rocker-faces are avoided, substantially as described.

In a rocker-bearing support for a carbody, rocker-plates arranged ateach side of said body in pairs and having curved opposing facesprovided with intermeshing cogs, the pitch-lines of which conform to thecurve of said faces, whereby sliding or endwise movement of one plate onthe other is prevented, substantially as described.

In testimony whereof I have hereunto set my hand this 10th day ofFebruary, A. D. 1891.

MOSES G. HUBBARD.

Witnesses:

LEWIS LORD, M. P. CALLAN.

